Marques, N., et al. “Differentiation of Citrus Tristeza Virus (CTV) Isolates by Cleavase Fragment Lenght Polymorphism (CFLP) Analysis of the Major Coat Protein Gene”. Phytopathologia Mediterranea, vol. 45, no. 2, Aug. 2006, pp. 99-109, doi:10.14601/Phytopathol_Mediterr-1822.